projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| ee43a844 PM |
1 | #ifndef __ASM_SH_CMPXCHG_LLSC_H |
| 2 | #define __ASM_SH_CMPXCHG_LLSC_H | |
| 3 | ||
| 4 | static inline unsigned long xchg_u32(volatile u32 *m, unsigned long val) | |
| 5 | { | |
| 6 | unsigned long retval; | |
| 7 | unsigned long tmp; | |
| 8 | ||
| 9 | __asm__ __volatile__ ( | |
| 10 | "1: \n\t" | |
| 42990701 MF |
11 | "movli.l @%2, %0 ! xchg_u32 \n\t" |
| 12 | "mov %0, %1 \n\t" | |
| 13 | "mov %3, %0 \n\t" | |
| 14 | "movco.l %0, @%2 \n\t" | |
| ee43a844 PM |
15 | "bf 1b \n\t" |
| 16 | "synco \n\t" | |
| 42990701 MF |
17 | : "=&z"(tmp), "=&r" (retval) |
| 18 | : "r" (m), "r" (val) | |
| ee43a844 PM |
19 | : "t", "memory" |
| 20 | ); | |
| 21 | ||
| 22 | return retval; | |
| 23 | } | |
| 24 | ||
| 25 | static inline unsigned long xchg_u8(volatile u8 *m, unsigned long val) | |
| 26 | { | |
| 27 | unsigned long retval; | |
| 28 | unsigned long tmp; | |
| 29 | ||
| 30 | __asm__ __volatile__ ( | |
| 31 | "1: \n\t" | |
| 42990701 MF |
32 | "movli.l @%2, %0 ! xchg_u8 \n\t" |
| 33 | "mov %0, %1 \n\t" | |
| 34 | "mov %3, %0 \n\t" | |
| 35 | "movco.l %0, @%2 \n\t" | |
| ee43a844 PM |
36 | "bf 1b \n\t" |
| 37 | "synco \n\t" | |
| 42990701 MF |
38 | : "=&z"(tmp), "=&r" (retval) |
| 39 | : "r" (m), "r" (val & 0xff) | |
| ee43a844 PM |
40 | : "t", "memory" |
| 41 | ); | |
| 42 | ||
| 43 | return retval; | |
| 44 | } | |
| 45 | ||
| 46 | static inline unsigned long | |
| 47 | __cmpxchg_u32(volatile int *m, unsigned long old, unsigned long new) | |
| 48 | { | |
| 49 | unsigned long retval; | |
| 50 | unsigned long tmp; | |
| 51 | ||
| 52 | __asm__ __volatile__ ( | |
| 53 | "1: \n\t" | |
| 42990701 MF |
54 | "movli.l @%2, %0 ! __cmpxchg_u32 \n\t" |
| 55 | "mov %0, %1 \n\t" | |
| 56 | "cmp/eq %1, %3 \n\t" | |
| ee43a844 | 57 | "bf 2f \n\t" |
| 4c7c9978 | 58 | "mov %4, %0 \n\t" |
| ee43a844 | 59 | "2: \n\t" |
| 42990701 | 60 | "movco.l %0, @%2 \n\t" |
| ee43a844 PM |
61 | "bf 1b \n\t" |
| 62 | "synco \n\t" | |
| 42990701 MF |
63 | : "=&z" (tmp), "=&r" (retval) |
| 64 | : "r" (m), "r" (old), "r" (new) | |
| ee43a844 PM |
65 | : "t", "memory" |
| 66 | ); | |
| 67 | ||
| 68 | return retval; | |
| 69 | } | |
| 70 | ||
| 71 | #endif /* __ASM_SH_CMPXCHG_LLSC_H */ |